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HYDRAFORCE
5278703


$80.05 USD
  • HYDRAFORCE
  • Material:5278703
  • Model:EHPR98-G38B-0-G-12ER
  • Summary:PROPORTIONAL PRESSURE REDUCING / RELIEVING CARTRIDGE VALVE

Due to extremely high demand, please call 920-337-0234 for availability

***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Hydraforce directly.***
The Hydraforce 5278703 (5278703) is a state-of-the-art hydraulic component designed for advanced fluid power applications. This EHPR98G38XXX model is a direct-acting, spool-type, proportional, pressure reducing relieving valve that integrates seamlessly into various hydraulic systems. Constructed as a drop-in, flange-mounted cartridge type valve, it is specifically engineered for use with mineral-based or synthetic hydraulic fluids that possess lubricating properties. This third-generation valve features an integral coil which is central to its operation but is not serviceable, emphasizing the need for precision in installation and maintenance. The functionality of the EHPR98G38XXX allows for the regulated pressure to be proportionally controlled by the input electrical current within specified pressure ranges. It offers quick response times and low leakage, enhancing both efficiency and reliability. The standard configuration of this valve is suitable for applications with inlet pressures up to 34 bar (500 psi), where rapid response and increased volume at the control port are critical. For higher-pressure scenarios up to 69 bar (1000 psi), where decreased volume at the control port is necessary, a damped plunger variant is recommended to maintain stability and performance. Additional features of this model include an economical drop-in style for ease of installation, multiple mounting plate options for flexibility in application, several regulated pressure ranges to suit diverse operational requirements, and a retrofit option for EHPR98T38 models. A top-mounted connector and optional screen further enhance its utility and adaptability in complex hydraulic setups.

Unit weight: 0.27 kg (0.60 lb)

Internal wetted surface area: 148 cm² (23.0 in²)

RatingsPressure Ratings
Pressure rating: 44.8 bar (650 psi)
At port 1
34.5 bar (500 psi)
At port 2 (standard plunger)
69 bar (1000 psi)
At port 2 (damped plunger)
34.5 bar (500 psi)
At port 3

Proof pressure: 207 bar (3000 psi)
Ports 1, 2
54 bar (780 psi)
Port 3

Burst pressure: 249 bar (3625 psi)
All ports pressurized

Control pressure at maximum control current: 21 bar (305 psi)
EHPR98-G38A
25 bar (363 psi)
EHPR98-G38B
30 bar (435 psi)
EHPR98-G38C

Flow Ratings
Flow rating: 23 lpm (6 gpm)

Maximum internal leakage: 50 ml/min (3.1 in³/min)
At 34.5 bar (500 psi) de-energized

Other Ratings
Cycle life: 10 million cycles

Environmental rating: IP69K

Corrosion protection: 960 hour salt spray per ASTM B117

Temperature Ratings
Operating fluid temperature: -40 to 149 °C (-40 to 300 °F)
HNBR
-26 to 204 °C (-15 to 400 °F)
Fluorocarbon

Storage temperature: -40 to 70 °C (-40 to 158 °F)

Ambient temperature: -40 to 120 °C (-40 to 248 °F)
Operating ParametersFluids: Mineral based or synthetic hydraulic fluid with lubricating
properties

Fluid viscosity range: 7.4 to 420 cSt
Electrical ParametersMaximum control current: 1.050 A
At 10 V
0.0880 A
At 12 V
0.720 A
At 14 V
0.525 A
At 20 V
0.440 A
At 24 V
0.360 A
At 28 V

Valve inductance: 77 mH
10 V coil
118 mH
12 V coil
165 mH
14 V coil
301 mH
20 V coil
446 mH
24 V coil
680 mH
28 V coil

Coil resistance: 4.83 ohm
10 V coil
7.28 ohm
12 V coil
10.05 ohm
14 V coil
18.35 ohm
20 V coil
29.54 ohm
24 V coil
40.36 ohm
28 V coil

Hysteresis: 4 %
At 120 Hz PWM
Performancehttps://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf12022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf22022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf32022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf42022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf52022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf62022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf72022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf82022-02-24.gif
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_perf92022-02-24.gif

Installation SpecificationsCavity: VC-G028
Standard configuration
Drop-in cavities
Installation type: Flange mounted

Orientation restriction: None

Mounting screw torque: 3 to 4 N-m (2.2 to 3.0 ft-lb)

Note: For retro-fitting into older drop-in cavities and other mounting
options, see "Mounting-options-for-G3-valves" technical reference
Mounting
options for G3 Valves
Order CodePOSITION CODE DESCRIPTION EHPR98-G38DG-H-J-KL-U D Max Regulated Pressure D A 21 bar (305 psi) D B 25 bar (363 psi) D C 30 bar (435 psi) G Screen G BLANK NONE G S 100 Mesh Screen H Line Body H 0 No Body J Seal J G HNBR (Hydrogenated Nitrile Butadiene Rubber) J V Fluorocarbon J P Polyurethane K Coil Voltage K 10 10 VDC K 12 12 VDC K 14 14 VDC K 20 20 VDC K 24 24 VDC K 28 28 VDC L Coil Termination L EJ E-Coil, AMP Jr. L ER E-Coil, Deutsch L EY2A E-Coil, Metri-Pack 150.2 U Mounting Plate U BLANK None U G Standard Single Valve Plate U T Retro-Fit Plate
https://www.hydraforce.com/globalassets/product-images/ehpr98-g38_dim2022-02-24.gif


Mounting plate: HF P/N 4595096
Use with standard VC-G028 cavity
HF P/N 4210226
Use with retrofit VC-T011 cavity

Mounting screw: M5 x 0,8 x 12 mm long, HF P/N: 4002609 (sold separately)
Use with standard VC-G028 cavity
M4 x 00.7 x 12 mm long, HF P/N: 4001015 (sold separately)
Use with retrofit VC-T011 cavity

Seal kit: SK-G028-X
X=seal option
Seal kit installation instructions
Ported test body: HF P/N: 71612X0